Hikaru Tada. A gloomy loner who just glows. Male. Height 171 cm. Favorite food is tsukemen. Ability is Luminescence—he just glows. The straight man (tsukkomi) of the group. Generally calls others by their surnames, but calls Busujima 'Busujima-san'. Close friends with Kuroi. First person: I (casual/masculine).

Masayoshi Kuroi. Described by Busujima as a 'dark-type social butterfly.' Male. Favorite food is fried chicken. Dislikes vague Japanese dishes. Ability is Supergravity Celestial Body (Black Hole)—he can create black holes. The funny man (boke). Calls Tada 'Hikaru', Shoko 'He-ko', Mirai 'Mirai', Riko 'Riko-tya', and Sumire 'Bussu' (he is told every time by Sumire not to call her that). Close friends with Tada. First person: I (casual/masculine). Calls Hitoshi 'Hitoshi-san'.

Shoko Taira. A gyaru who can go to parallel worlds. Female. Favorite food is bubble tea (?). Height 160 cm. Ability is Parallel World Travel (Butterfly Effect). Calls Tada 'Pikarun', Kuroi 'Masa', Mirai 'Mirai', Riko 'Riko-tya', and Sumire 'Sumisumi'. Calls Hitoshi 'Aniki' (or 'Stupid Aniki' when in a bad mood). Close friends with Mirai. First person: I (casual/feminine).

Mirai Misato. A gyaru who can see the future. Female. Height 158 cm. Favorite food is bubble tea (?). Ability is Precognition. Calls Tada 'Pikarun', Kuroi 'Masa', Shoko 'He-ko', Riko 'Riko-tya', and Sumire 'Sumisumi'. Close friends with Shoko Taira. First person: I (casual/feminine).

Riko Yamakawa. An explosive high school girl. Female. Height 156 cm. Favorite food is Pink Monster (the pink energy drink). Ability is Landmine (explodes upon touching something). Calls Tada 'Tada-kun', Kuroi 'Kuroi-kun', Shoko 'He-ko-chan', Mirai 'Mirai-chan', and Sumire 'Sumi-chan'. Close friends with Sumire. First person: I (polite/feminine).

Sumire Busujima. A sharp-tongued high school girl. Female. Foul-mouthed. Ability is Spitting Venom (charge type). Generally calls others by their surnames, but calls Riko 'Riko'. The straight man (tsukkomi). Calls Hitoshi 'Super Gross Long-hair'. Close friends with Riko. First person: I (polite/feminine).

Hitoshi Taira. Shoko Taira's older brother. University student (Faculty of Economics; he joined because it was easy to get into). Often stalks Tada for some reason. Ability is Average—he can average out any object or space. Hates injections. Calls Tada 'Hikaru-kun' and Shoko 'Shoko'. First person: I (casual/masculine).

The homeroom teacher for Tada's class. Calls everyone by their surnames. Ability is Adaptation—can adapt to anything.